CN104196636A - Gas turbine with sealed structure - Google Patents
Gas turbine with sealed structure Download PDFInfo
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- CN104196636A CN104196636A CN201410374501.6A CN201410374501A CN104196636A CN 104196636 A CN104196636 A CN 104196636A CN 201410374501 A CN201410374501 A CN 201410374501A CN 104196636 A CN104196636 A CN 104196636A
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Abstract
The invention relates to the technical field of gas turbines and discloses a gas turbine with a sealed structure. Annular extending parts are formed in the adjacent surfaces of adjacent wheel discs; groove parts are formed in the opposite surfaces of two extending parts along the circumferential direction; the sealed structure is formed in the space formed by the groove parts and comprises the extending parts, the groove parts and seal plate components; each groove part has multiple groove sections; the shapes or widths of adjacent groove sections are different; the seal plate components are clamped and embedded in the groove parts; each seal plate component has multiple clamping sections corresponding to the groove sections; the shape and width of each clamping section are matched with those of the groove section in which the clamping section is clamped and embedded. According to the gas turbine with the sealed structure, the seal plate components and the groove parts of the wheel discs are directly buckled; no anti-rotating parts are needed; the gas turbine is relatively simple in structure and convenient to install, has no connective gaps and is good in seal performance.
Description
Technical field
The present invention relates to gas turbine technology field, particularly relate to a kind of gas turbine with sealing configuration.
Background technique
The working principle of gas turbine is to adopt gas compressor pressurized air, and pressurized air enters behind firing chamber, with the fuel generation combustion reaction of injecting firing chamber, emits heat, becomes high temperature compressed gas, and then turbine rotates acting under the promotion of this high temperature compressed gas.The part that turbine does work is for promoting gas compressor running, and remaining merit is mainly used in driving the external loadings such as generator.The temperature of the compression high-temperature gas of giving turbine that the practical efficiency of gas turbine and firing chamber produce (being temperature before turbine) is closely related, so modern gas turbines often designed temperature before high as far as possible turbine, to obtain higher efficiency.The temperature that in turbine, the temperature of gas can bear far beyond materials such as cylinder, blades at present, must be used the normal work of cooling technology guarantee gas turbine.Cooling method, is generally to extract the gas of a part of gas compressor exhaust and gas compressor intergrade as cooling medium, introduces stator blade, movable vane and rotor, completes cooling.From improving the angle of gas turbine proficiency, need the strict leakage of cooling medium in flow channel of controlling.
As illustrated in fig. 1 and 2, the structure sectional view of rotor, each rotor comprises a plurality of wheel discs that are arranged in order 5, between adjacent wheel disc 5, by special type, fixes, for the requirement of accommodate thermal expansion etc., beyond fixed structure, adjacent wheel disc 5 is directly not contact.Between adjacent wheel disc 5, it is cooling air chamber 15, sealing between the high-pressure air chamber 16 of cooling air chamber 15 and internal rotor completes by following structure: on the annular extension 51 of adjacent wheel disc 5, be provided with groove portion 7, along the sealing plate assembly 14 of the circumferential insertion ring-type of groove portion 7.In rotor speed, reach after certain value, the centrifugal force that sealing plate assembly 14 produces with rotor can make sealing plate assembly 14 and the outer side surface of groove portion 7 be close to, thereby has realized the sealing for cooled gas.
About this sealing configuration, existing known technology comprises:
Japanese Patent Publication Unexamined Patent 11-247999A discloses a kind of sealing configuration, described sealing plate assembly consists of two overlapping sealing plates (outside sealing plate and inner seal plate), and the fixing pin being fixed by welding on sealing plate fixes these parts, with the circumferential offset between peventing member.Although this patent has been used fixing pin restriction sealing plate and mutual the relatively moving of spring plank; but sealing plate assembly is not fixed with respect to rotating disk integratedly; so in the situation that the rotating speeds such as gas turbine startup, shutdown are less; centrifugal force is less, and sealing plate can produce and relatively move with respect to rotating disk.If things go on like this, sealing plate there will be wearing and tearing, thereby must periodic replacement.And due to the welded structure of sealing plate fixing pin, while making to change, must return factory's dismounting rotor, increased engineering time and cost.
China's application for a patent for invention numbers 200510116122.8 discloses a kind of sealing configuration, on sealing plate and wheel flange, buckling part is set, and uses rotation inhibiting parts to be arranged on the buckling part of sealing plate and wheel flange, thus engaging both.This patent utilization rotation inhibiting parts engaging sealing plate, thus solved sealing plate slip and wear problem.Rotation inhibiting parts and sealing plate all can field strippings, thereby greatly reduce engineering time and cost.Although this patent solved sealing plate wearing and tearing and on-the-spot replacing problem, because rotation inhibiting parts will complete fixing between fixing, sealing plate between sealing plate and wheel flange simultaneously, so having relatively high expectations to its structural design.Stressed more complicated due to rotation inhibiting parts, in order to keep intensity, just be difficult to reduce weight, when gas turbine moves with rated speed, the centrifugal force that any point quality causes is all very large, therefore, this design inevitably for the wheel disc at rotation inhibiting parts place, sealing plate structural strength have higher requirements.Although rotation inhibiting parts and sealing plate can be dismantled at the scene, but the rotation inhibiting parts of having considered sealing have the possibility that falls into gas turbine inside, once allow because of carelessness rotation inhibiting parts fall into and be stuck in the inside of gas turbine during maintenance, still need to return factory's dismounting rotor.In addition, at rotation inhibiting parts place, inevitably there is connectivity gap, reduced the tight degree of sealing.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of gas turbine with sealing configuration, by the locking strutcture of sealing plate assembly and groove portion, prevent that sealing plate assembly from sliding and wearing and tearing; Employing runs through the assembly that is connected of design, makes simple in structure, easy for installation.
(2) technological scheme
In order to solve the problems of the technologies described above, the invention provides a kind of gas turbine with sealing configuration, wherein, on the adjacently situated surfaces of adjacent wheel disc, there is annular extension, on the opposing side of two extensions, be provided with along circumferential groove portion, in the space forming at groove portion, sealing configuration is set, described sealing configuration comprises:
Described extension;
Described groove portion, described groove portion has a plurality of groove sections, and the shape of adjacent described groove section or width are not identical;
Sealing plate assembly, described sealing plate assembly inlay card is in described groove portion, and described sealing plate assembly has the corresponding screens section of a plurality of and described groove section, and shape and the width of the shape of described screens section and width and place groove section match.
Wherein, described sealing plate assembly comprises that multistage docks successively and forms the main connecting plate of ring-type and multistage for covering the accessory plate of described main connecting plate butt seam; The corresponding position of described main connecting plate and described accessory plate is provided with penetration hole; Described penetration hole is removably provided with the assembly that is connected, for connecting described main connecting plate and accessory plate.
Wherein, described accessory plate is one deck, and accessory plate is arranged on inner side or the outside of described main connecting plate described in one deck; The total length of every layer of described accessory plate is less than the length of a circumference.
Wherein, the quantity of described main connecting plate and accessory plate is identical, and one section of described accessory plate covers the butt seam between a pair of adjacent described main connecting plate.
Wherein, described main connecting plate is connected by the described assembly that is connected one to one with accessory plate.
Wherein, the radian of every section of described main connecting plate is equal, and described accessory plate is along being circumferentially evenly arranged.
Wherein, described accessory plate is two-layer, and two-layer described accessory plate is separately positioned on inner side and the outside of described main connecting plate; The total length of every layer of described accessory plate is less than the length of a circumference.
Wherein, described penetration hole is star-shaped aperture; The described assembly that is connected comprises and runs through parts; At the described front end that runs through parts, be provided with the star plate corresponding with described penetration hole, described in run through parts rear end be provided with radially spacing preiection, the diameter of described spacing preiection is greater than the center-hole diameter of described penetration hole; The described front end that runs through parts is through described penetration hole, and described star plate and described penetration hole form spinner structure.
Wherein, this assembly that is connected also comprises spacing shim and secure component, and the one side of described spacing shim is provided with the limiting tooth corresponding with described penetration hole; The described ear end face that runs through parts is provided with double-screw bolt, and described spacing shim is inserted in described double-screw bolt, and described limiting tooth snaps in described penetration hole; Described secure component is connected with described double-screw bolt, clamps described spacing shim.
Wherein, described extension is provided with breach, described breach with described in the assembly that is connected corresponding.
(3) beneficial effect
The gas turbine with sealing configuration provided by the invention, compared with prior art, have the following advantages and the technique effect of high-lighting: (1) is because the groove portion of sealing plate assembly and wheel disc directly fastens, therefore without using rotation inhibiting parts, structure is comparatively simple, convenient installation; There is no connectivity gap, better tightness.(2) use the assembly that is connected to be fixed sealing plate assembly, so its structure is comparatively simplified, weight is lighter, and the assembly that is connected when gas turbine rotates is less to sealing plate assembly around, wheel disc extension applied force.(3) assembly that is connected is installed after the installation of sealing plate assembly again, in the design that runs through parts of the assembly that is connected, the parts of the assembly that prevents from being connected are fallen into the inside of rotor disk, in maintenance process, do not need to return repair in shop reason, enhance productivity.
Accompanying drawing explanation
Fig. 1 is gas turbine wheel disk structural drawing around;
Fig. 2 is the assembly structure decomposing schematic representation of the embodiment of the present invention 1;
Fig. 3 is that sealing configuration of the present invention is in the generalized section that runs through parts place;
Fig. 4 is the three-dimensional exploded view of the sealing plate assembly of the embodiment of the present invention 1;
Fig. 5 is the assembly exploded view that is connected of the embodiment of the present invention 1;
Fig. 6 is connected the enlarged view of assembly in Fig. 5;
Fig. 7 is the schematic diagram of the embodiment of the present invention 2.
In figure, 1: assembly is connected; 2: breach; 3: groove section; 4: main connecting plate; 5: wheel disc; 6: accessory plate; 7: groove portion; 8: penetration hole; 9: run through parts; 10: spacing shim; 11: secure component; 12: spacing preiection; 13: limiting tooth; 14: sealing plate assembly; 15: cooling air chamber; 16: high-pressure air chamber; 51: extension; 91: star plate; 30: Stamping Steel Ribbon; 33,34: groove section.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following instance is used for illustrating the present invention, but is not used for limiting the scope of the invention.
Embodiment 1:
Shown in Fig. 2～6, the gas turbine with sealing configuration of the present invention, wherein, on the adjacently situated surfaces of adjacent wheel disc 5, there is annular extension 51, on the opposing side of two extensions 51, be provided with along circumferential groove portion 7, in the space forming, sealing configuration be set at groove portion 7, sealing configuration comprises: extension 51, groove portion 7 and sealing plate assembly 14, groove portion 7 has a plurality of groove sections 3, and the shape of adjacent slot section 3 or width are not identical.Sealing plate assembly 14 inlay cards are in groove portion 7, and sealing plate assembly 14 has a plurality of screens sections corresponding with groove section 3, and shape and the width of the shape of screens section and width and place groove section 3 match.Sealing plate assembly 14 produces direct fastening structure with groove portion 7, when the wheel disc 5 of rotor rotates, sealing plate assembly 14 has the trend of rotating along the groove portion 7 of extension 51, but because the structure of each screens section is not identical, sealing plate assembly 14 is circumferentially blocked by groove portion 7 edges, can not relatively rotate with wheel disc 5, not need to arrange rotation inhibiting portion and position.
As shown in Figure 4, the sealing plate assembly 14 of the present embodiment comprises that multistage docks successively and forms the main connecting plate 4 of ring-type and multistage for covering the accessory plate 6 of main connecting plate 4 butt seams.Main connecting plate 4 is end to end convergence successively, does not superpose, but arranges in the mode of docking, inner side or outer side covers accessory plate 6 in each connected portion gap at connected portion.In the present embodiment, the width of groove portion 7 adjacent slot sections 3 is not identical, and the width on main connecting plate 4 length directions is inhomogeneous, and the width of its width and place groove portion 7 matches.As shown in Figure 4, main connecting plate 4 and accessory plate 6 are one deck, and accessory plate 6 is arranged on the inner side of main connecting plate 4.Main connecting plate 4 is provided with penetration hole with the corresponding position of accessory plate 6, and penetration hole 8 is removably provided with the assembly 1 that is connected, for connecting main connecting plate 4 and accessory plate 6.The total length of accessory plate 6 is less than the length of a circumference.Main connecting plate 4 is identical with the quantity of accessory plate 6, one section of butt seam that accessory plate 6 covers between a pair of adjacent main connecting plate 4, and main connecting plate 4 is connected by the assembly 1 that is connected one to one with accessory plate 6.Preferably, the radian of every section of main connecting plate 4 is equal, and accessory plate 6 is along being circumferentially evenly arranged.
In the present embodiment, as shown in FIG. 5 and 6, penetration hole 8 is star-shaped aperture, and the star-shaped aperture in the present embodiment is a triangle star-shaped aperture, and the surrounding at center hole is provided with three leaf holes.The assembly 1 that is connected comprises and runs through parts 9, secure component 11 and spacing shim 10.The body that runs through parts 9 is a cylinder, at the front end that runs through parts 9, is provided with the star plate corresponding with penetration hole 8 91; The rear end of running through parts 9 is provided with radially spacing preiection 12, and the diameter of spacing preiection 12 is greater than the center-hole diameter of penetration hole 8.Run through the front end of parts 9 through penetration hole 8, star plate 91 forms spinner structure with penetration hole 8, rotation runs through parts 9, because the diameter of spacing preiection 12 is greater than the center-hole diameter of penetration hole 8, makes main connecting plate 4 and accessory plate 6 clips between star plate 91 and spacing preiection 12.When installation or removal, run through parts 9 and can be blocked by penetration hole 8 all the time, cannot drop to through penetration hole 8 inside of rotor disk.The one side of spacing shim 10 is provided with the limiting tooth corresponding with penetration hole 8 13, and the limiting tooth in the present embodiment is three, matches with three leaf holes of star-shaped aperture, and the internal diameter of spacing shim is greater than the external diameter of the spacing preiection 12 running through on parts 9.The ear end face that runs through parts 9 is provided with double-screw bolt, and spacing shim 10 is inserted in double-screw bolt, and limiting tooth 13 snaps in penetration hole 8.Fastening part 11 is nut, secure component 11 is connected with double-screw bolt, after screwing with double-screw bolt, secure component 11 clamps the internal tooth of the penetration hole 8 of spacing shim 10, sealing plate 4 and sealing plate 6 jointly with the star plate 91 that runs through parts 9, now the limiting tooth of spacing shim 10 is through the internal tooth breach of penetration hole 8, and through the tooth breach that runs through the star plate 91 of parts 9, prevent from running through parts 9 and rotate with respect to penetration hole 8.
In order to facilitate the installation location of installation personnel, at extension 51, be provided with breach 2, the position of breach 2 is corresponding with the position of the assembly 1 that is connected, installation personnel is by the indication of breach 2, the penetration hole of main connecting plate 4 and accessory plate 68 and breach are fit into groove portion 7 accordingly, avoid installation personnel to carry out trial and error work, improve installation efficiency.
It should be noted that, it is example that above-described embodiment 1 be take the main connecting plate of one deck and one deck accessory plate, and accessory plate is arranged on the inner side of main connecting plate 4, and in fact, accessory plate 6 also can be arranged on the outside of main connecting plate.Certainly, accessory plate of the present invention can be for two-layer or more than three layers.As accessory plate can have two-layerly, wherein, one deck is arranged on the inner side of main edge joint plate, and another layer is arranged on the outside of main connecting plate.
Embodiment 2:
The present embodiment difference from Example 1 is, as shown in Figure 7, is the STRUCTURE DECOMPOSITION figure of sealing plate assembly 14 with groove portion 7 parts, and sealing plate assembly 14 matches with shape and the width of groove portion 7.The groove portion 7 of the present embodiment there is 34 two kinds of groove section 33 and groove sections, not identical and adjacent being crisscross arranged of the shape of groove section 33 and groove section 34.Sealing plate assembly 14 comprises along the many Stamping Steel Ribbons 30 of the overlapping placement of circumferential order.The form fit of the shape of groove section 33 and Stamping Steel Ribbon 30 superimposed parts; The shape of the shape of groove section 34 and Stamping Steel Ribbon 30 matches.Many Stamping Steel Ribbon is installed to groove portion 7 from the insert port of groove section 33 or groove section 34 successively, does not need to use any rigid connector to connect between each Stamping Steel Ribbon.Now, each Stamping Steel Ribbon is along radially there being several angle, when gas turbine rotates, effect due to centrifugal force, 7 pairs of Stamping Steel Ribbons of groove portion 30 form retaining structure, prevent Stamping Steel Ribbon and groove portion generation relative sliding, by circumferentially screens of edge, there is not relative sliding between sealing plate assembly 14 and extension 51 in sealing plate assembly.All Stamping Steel Ribbons form one and almost do not have apertured sealing plate assembly 14, with respect to other, have the sealing configuration of joint, can obtain better sealing effect.
It should be noted that, the Stamping Steel Ribbon number of overlapping placement is not limited to this embodiment's description, and the overlapping number of plies can be also 3 layers even more than 4 layers.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a gas turbine with sealing configuration wherein, has annular extension on the adjacently situated surfaces of adjacent wheel disc, on the opposing side of two extensions, be provided with along circumferential groove portion, in the space forming at groove portion, sealing configuration is set, it is characterized in that, described sealing configuration comprises:
Described extension;
Described groove portion, described groove portion has a plurality of groove sections, and the shape of adjacent described groove section or width are not identical;
Sealing plate assembly, described sealing plate assembly inlay card is in described groove portion, and described sealing plate assembly has the corresponding screens section of a plurality of and described groove section, and shape and the width of the shape of described screens section and width and place groove section match.
2. the gas turbine with sealing configuration as claimed in claim 1, is characterized in that, described sealing plate assembly comprises that multistage docks successively and forms the main connecting plate of ring-type and multistage for covering the accessory plate of described main connecting plate butt seam; The corresponding position of described main connecting plate and described accessory plate is provided with penetration hole; Described penetration hole is removably provided with the assembly that is connected, for connecting described main connecting plate and accessory plate.
3. the gas turbine with sealing configuration as claimed in claim 2, is characterized in that, described accessory plate is one deck, and accessory plate is arranged on inner side or the outside of described main connecting plate described in one deck; The total length of every layer of described accessory plate is less than the length of a circumference.
4. the gas turbine with sealing configuration as claimed in claim 3, is characterized in that, the quantity of described main connecting plate and accessory plate is identical, and one section of described accessory plate covers the butt seam between a pair of adjacent described main connecting plate.
5. the gas turbine with sealing configuration as claimed in claim 4, is characterized in that, described main connecting plate is connected by the described assembly that is connected one to one with accessory plate.
6. the gas turbine with sealing configuration as claimed in claim 5, is characterized in that, the radian of every section of described main connecting plate is equal, and described accessory plate is along being circumferentially evenly arranged.
7. the gas turbine with sealing configuration as claimed in claim 2, is characterized in that, described accessory plate is two-layer, and two-layer described accessory plate is separately positioned on inner side and the outside of described main connecting plate; The total length of every layer of described accessory plate is less than the length of a circumference.
8. the gas turbine with sealing configuration as described in claim 2 to 7 any one, is characterized in that, described penetration hole is star-shaped aperture; The described assembly that is connected comprises and runs through parts; At the described front end that runs through parts, be provided with the star plate corresponding with described penetration hole, described in run through parts rear end be provided with radially spacing preiection, the diameter of described spacing preiection is greater than the center-hole diameter of described penetration hole; The described front end that runs through parts is through described penetration hole, and described star plate and described penetration hole form spinner structure.
9. the gas turbine with sealing configuration as claimed in claim 8, is characterized in that, this assembly that is connected also comprises spacing shim and secure component, and the one side of described spacing shim is provided with the limiting tooth corresponding with described penetration hole; The described ear end face that runs through parts is provided with double-screw bolt, and described spacing shim is inserted in described double-screw bolt, and described limiting tooth snaps in described penetration hole; Described secure component is connected with described double-screw bolt, clamps described spacing shim.
10. the gas turbine with sealing configuration as claimed in claim 9, is characterized in that, described extension is provided with breach, described breach with described in the assembly that is connected corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374501.6A CN104196636B (en) | 2014-07-31 | 2014-07-31 | Gas turbine with sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374501.6A CN104196636B (en) | 2014-07-31 | 2014-07-31 | Gas turbine with sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104196636A true CN104196636A (en) | 2014-12-10 |
| CN104196636B CN104196636B (en) | 2017-12-01 |
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ID=52081980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410374501.6A Active CN104196636B (en) | 2014-07-31 | 2014-07-31 | Gas turbine with sealing structure |
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| Country | Link |
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| CN (1) | CN104196636B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632414A (en) * | 2015-01-30 | 2015-05-20 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Sealing structure for gas turbine |
| CN112392763A (en) * | 2019-08-12 | 2021-02-23 | 斗山重工业建设有限公司 | Rotor, turbine and gas turbine with replaceable self-locking sealing assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11247999A (en) * | 1998-03-02 | 1999-09-14 | Mitsubishi Heavy Ind Ltd | Seal device of rotary machine |
| US20040051254A1 (en) * | 2002-09-13 | 2004-03-18 | Siemens Westinghouse Power Corporation | Multidirectional turbine shim seal |
| CN1651774A (en) * | 2004-02-05 | 2005-08-10 | 株式会社韩国伽斯普邻 | Cylinder with rotation prevention structure |
| CN1818350A (en) * | 2005-02-07 | 2006-08-16 | 三菱重工业株式会社 | Gas turbine with hermetically-sealed construction |
| CN102996258A (en) * | 2011-09-08 | 2013-03-27 | 通用电气公司 | Non-continuous ring seal |
| JP2013100747A (en) * | 2011-11-08 | 2013-05-23 | Mitsubishi Heavy Ind Ltd | Gas turbine |
| CN204113464U (en) * | 2014-07-31 | 2015-01-21 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | There is the gas turbine of sealing configuration |
-
2014
- 2014-07-31 CN CN201410374501.6A patent/CN104196636B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11247999A (en) * | 1998-03-02 | 1999-09-14 | Mitsubishi Heavy Ind Ltd | Seal device of rotary machine |
| US20040051254A1 (en) * | 2002-09-13 | 2004-03-18 | Siemens Westinghouse Power Corporation | Multidirectional turbine shim seal |
| CN1651774A (en) * | 2004-02-05 | 2005-08-10 | 株式会社韩国伽斯普邻 | Cylinder with rotation prevention structure |
| CN1818350A (en) * | 2005-02-07 | 2006-08-16 | 三菱重工业株式会社 | Gas turbine with hermetically-sealed construction |
| CN102996258A (en) * | 2011-09-08 | 2013-03-27 | 通用电气公司 | Non-continuous ring seal |
| JP2013100747A (en) * | 2011-11-08 | 2013-05-23 | Mitsubishi Heavy Ind Ltd | Gas turbine |
| CN204113464U (en) * | 2014-07-31 | 2015-01-21 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | There is the gas turbine of sealing configuration |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632414A (en) * | 2015-01-30 | 2015-05-20 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Sealing structure for gas turbine |
| CN112392763A (en) * | 2019-08-12 | 2021-02-23 | 斗山重工业建设有限公司 | Rotor, turbine and gas turbine with replaceable self-locking sealing assembly |
| CN112392763B (en) * | 2019-08-12 | 2022-05-13 | 斗山重工业建设有限公司 | Rotor, turbine and gas turbine with replaceable self-locking sealing assembly |
Also Published As
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|---|---|
| CN104196636B (en) | 2017-12-01 |
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